rollz4kix

She's starting to smoke ,white . Just changed the oil a couple weeks ago - castrol 10-30, took a road trip & when I got back I noticed her smoking lightly. She has 203 G's on her. Any ideas?

krawlthis

Head gasket

XJx3

Headgasket most likely, do a compression test and you will find out.

rollz4kix

What numbers am I looking for for good compression?

XJx3

I should add that in rare cases a cracked head will do the same thing. Usually the gasket goes before the head cracks.

krawlthis

Also check to see if your oil has coolant in it. It will look milky/hazy. Another sign its a head gasket

XJx3

what year and engine?

Jeepjunky

all the numbers should be within 25% of each other when doing a compression test. when 1 is in the 80s and the rest in the 120s-130s u should know which one it is

XJx3

I think off hand it's 120 to 150 with no cylinders more than 30 off So if it's 120 then 90 would be problem cylinder

rollz4kix

I also changed the water pump & t-stat recently & the pump leaked once & started to chirp so I bought another to replace it but havent had the time , am going to get to it this weekend. I had also noticed during the summer she would smoke when the AC was on.

DFlintstone

I think it's there XJx3 92 4.0. So it's white steam that dissipates, and not bluish smoke that sticks around a bit? (water vs. oil).

rollz4kix

92 4.0

rollz4kix

White smoke, I'll check the oil tomorrow & tell you guys what I find.

jeepin4fun97

I've got some what the same problem but my oil looks fine... it does leak out of the front main and rear main.... its got almost 200 k on it

Jeepjunky

^^so ur leakin and burnin? not good